Fuel-saving device.



W. C. BLASKE. FUEL SAVING DEVIGE.,v APvLlcATmN man Nov. a. 19m.'

V' SHEETS-SHEET l.

W. C. BLASKE. FUEL SAVNG DEVICE. APPLvlcATloN min nov. 3. 19113.

, ,O T 20u 2 SHEETS-SHEET 2.

Patented Apr. 6, 1915.

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` citizen of the United States,

memoire, sumed carbon, issues from the lire,

"est wratten o. sLAsKE, or CHICAGO, rumors, AssIGN'On, Bv Mnsm: ASSIGNMENTS, To

naar savait COMPANY, or omesso, ILLINOIS, a CORPORATION. i,

l l FUEL-SAVING- DEVICE.-

nisaeaa.

.application tiled November 3, 1913. Serial No. 799,044.

To all whom t may concern Be it known that', WILLIAM C. B'Lasnn, a

cago, in the county of Cook and State .of Illinois, -have invented new and useful mproveniente in Fuel --Saving Devices, of which the following is a specification.

The present invention relates to new and useful improvements in fuel saving apparatuses.

In the operation of, the ordinary stove or furnace, two distinct processes are involved. First, there is the combustion of the fuel by the combination of the Carbon therein with the oxygen admitted in the draft. In addition to this combustion, however, there is a process of distillation whereby large quantities of combustible gaseous products are evolved from the fuel by the heatof the re. In additionV to these combustible gaseous products, Vconsiderable quantities of consisting of nely divided unconthe presence of smoke always indicating the presence of combustible gases. These combusti .ble gases in reality contain a large proportion of the heat units involved in the fuel, yet inthe operation of the ordinary stove, they pass up the chimney and are totally wasted.

It is the object of my invention topractically obtain the full benefit of the heat value of the fuel by promoting a Acomplete comfbustion thereof.y

It is another object of my invention yto deliver to the highly heated combustible gases evolved from the fire, a stream of preheated air having a sutlicient heat to produce a combustion of the these gases, as it were, and burning themv to values. i

My invention contemplates an apparatus whereby a stream of air is first preheated and then eiliciently and automatically delivered to the interior of at near the point where the combustion gases are evolved from the' fuel.

My invention further contemplates 1n\apparatus whereby the stream of -air just. described, is permitted to How into ther fuel consumerand combine with the combustible gases near their point of'evolution ofthe fuel, the apparatus being so designed 'as'not before they escape, obtain their heat Specification of Letters Patent.

residing at Chi 'parting from the spirit gases, thus catching' Ythe fuel. consumer' lPatented Apr, 6, i915.

Vto prevent or impede the updraft through the flue. y In the accompanying drawings hasvbeen shown the simple and preferred vforms of the invention, it being understood, however, that no limitation' is necessarily made to the precise structural details thereinl described', but the right is reserved `to any changes, alterations or modifications to Awhich'frecourse may be had that come Withinv'the scope of the present invention, withoutfdethereof. 1' l In the drawings: Figure l' is an elevation of the stove-pipe having one form of in# vention as applied thereto. F ig. 2 is avertical section of the same. Fig. 3 is al horizontal section taken 'on the line 3;3y 'of Fig. 2. Fig'. 4 illustrates a slightlyjm'odified form of my invention, and Figf is a. horizontal section taken on the line 5-5 of lfig. 4.

It will, of course, Order to obtain the best practical results with this device, the Openings ordrafts in the furnace orstove are closed so as to eliminate an updraft through the chimney' thus leaving the gas in the iiue or furnace beyoud or below the prf-:heating chamber, practical y quiescent so that the 'preheated air may flow or travel to the combustion chamber and combine with the combustible material. to cause combustion.

Reference now being had to the drawings, wherein I have shown cent sections ofa stovelpipe 'A and B respectively,- to which .are connectedV in the usual manner an intermediate section C forming the subjectsmatter ofthe present invention. A cylindrical tube lis provided havingv one end thereof corrugated as at 2 whereby theshown, thereby providing means for closing the upper end `of the chamber 4. Secured to the lower end of the tube 1 as at 8 is a truncated conical section 9 having its lower be understood that in.

portions of two adjacasing 3 by the usual or base ortion connected adjacent the lower'4 end of t e casing 3 as 'at 10,thereby forming the lower wall of the chamber. Gonnected to the casing 3 by means of the beaded connection 11 is an inverted conical section 12 having connected to its lower end the cylindrical section 13 whichis adapted to be connected to the adjacent section B of the stcvepipe in the usual manner.

A damper D is mounted within the tube 1 upon an axle E which is journaled within the structure as shown and provided at one Dextremity of the axle is an operating lever E The damper D is slightly less in diameter than the inner diameter of the tube l thereby providing a space around the damper when the same is closed to permit the .plates 19 which permit required escape of the gases through the flue. The upper end of the tube 1 projects be- '.yond the casing 3 and has formed therein a plurality of openings 14' and a sliding draft `valve 15 encircles the outer periphery of the tube having openings 16 formed therein adapted to register with the openings 14. A handle 17 is carried by the valve 15 whereby the operator may open and close the draft valve. rIhis draft valve is adapted to be openedwhen the damper D is closed, thereby forming a draft within the lue abovethe damper to promote the smoke or other gases to escape as is common.

Formed within the casing 3 adjacent the upper end thereof are a plurality of openings 18 which permit the air to enter the chamber 4. The portions of theocasng 3 which have been cut away to fornnthe open ings are forced inwardly to provide baille the air to enter the openings 18 but direct the same within the upper end rapid movement of the air into the flue, as will be hereinafter more fully described. `The wall 9 closing the lower end of chamber a is provided with a plurality of small Qpenings 2O which permit the incoming air to enter the flue in relatively small streams.

|1`he device heretofore described is made of sheet metal and readily assembled thereby producing an article which will be cheap to manufacture and which is a great advance in the present art.

In Fig illustrated a slightly modified form of the invention whereby 'the device is made of cast iron being adapted to be placed within a sheet metalstove-pipe as shown,l or any other stove-pipe flue or breeching. I ln the modified-form of the invention, l have pro vided an outer casing 21 having connected tothe lower end thereof by means of a beaded connecti n 22 a conical section 23 and secured to t e loaver end of the conical section is the cylindrical section 24 adaptedv to be connected to the adjacent section of vdrical casing comprising of the chamber l to prevent the the lparts thereof may be.

s. l and 5 of the drawings, l have the stove-pipe in the usualmanner. A cylindrical tube 25 having the same interior diameter as that of the section at its lower extremity with an annular flange 26 which is connected to the upper end of the casing 2l by any suitable or well known means or by rivets 27 as shown. Adapted to be placed within the casing 21 is a cylintwo semi-circular sections 28 and`29 respectively. Each of these semicircular sections comprises an outer wall 30 and an inner wall 31 which are connected at their upper ends by means of a substantially horizontal wall `32 and their' lower ends by means of an inclined wall 33.

, The opposite ends of each semi-circular section are closed by means of the walls 3a. Formed within the outer wall 30 of each section and adjacent the upper ends thereof area plurality of openings35 which rest in alinement with corresponding openings 36 formed within the casing 21. Formed integral with the inner wall of each semi-cir cular section are baille plates 36 which eX#4 tend inwardly and upwardly, for directing the air Within the upper ends of t e chamn bers 37 `formed by the walls of t e semicircular sections. The lower inclined walls 33 of each semi-circular section are provided with a plurality of openings 38 whereby 24 is providedv air from' the chamber 37 will be permitted to enter the flue. The shaft E carrying the damper D is journaled within the-casings as shown, forl the purpose which has heretofore Y been described and the upper cylindrical section 25 is provided with the draft valve 15 as described in the preferred form of the invention.

From the foregoing itis evident thatlthe inner tubes of the devices extend in axial alinement with the stove-pipe or flue whereby the device will not in any way interfere with the escaping gases from they-furnace.

It is very desirable that the incoming air be as quiescent as possible in order that the diffusion into thev surrounding gases may be more completely and effectively' accomplished,` therefore the openings within the outer casing of the device are of limited area and the baille plates adjacent tov said openings retard the currents of air by directing the same into the upper end of the chamber. The air while retained within the chambers will be heated by the outgoing heated gases as the chamber encircles the flue and provides a large heating surface.

By providing the inverted cone-shaped chamber Gr, the preheating chamber is o'set from the flue passage so as not to impede or retard the updraft from the furnace or stove which feature is very advantageous when first starting the fire or when the lower drafts in the furnace or'stove are opened'for the prfrpose of rapidlyV increasing the heat withil'the furnace.

. said Hue section with ber, a caslng surrounding said section and' end and frusto conical section into the Hue leading to the combustion. chamber. n

2. In a device of the class described, a sectional Hue member, the sections of the Hue` member being in communication by n eans of an enlarged chamber, a casing surrdhhding one of the sebtions and means of communication from the atmosphere through said casing into the enlarged chamber for the purpose set forth. 3. In a device of the class sectional Hue member,

described, a one of the sections of the Hue member having an ain pre-heating chamber surrounding the same, means for connecting 'the sections of the Hue member toget er and providing an enlarged chamber, and pre-heating chamber may/be permitted to enter thevenlarged chamber for the purpose set forth.

4. In a device of sectional smoke Hue member having a smoke passage way therethrough, a casing encircling one of lthe sections of the Hue member forming an air pre-heating chamber, a lfrusto Aconical section connecting the other section of the Hue member with the casing connecting said casmeans whereby the air from the the class described, a

forming an enlarged chamber between the Hue sections and means for permitting the prefheatedl air to enter into the enlarged chamber for the purpose set forth.

' 5. In a device of. the class described, a Hue member comprising two sections, a' cas` ing connecting the Hue sections, air preheating chambers inclosed bythe casing and retained in -position `by mea-n's of the two sections of the Hue, the lower ends of thelair pre-heating chambers having openings therein leading within the Hue member, baHed inlet openings formed within the upper ends of the adir pre-heating chambers and the casing having openings registering with the. baHied inlet openings fer the purpose set forth. f

In a fuel saving device of the class .described, a Hue member comprising two sections, a casing connecting vthe Hue sections, semi-circular air preheating vchambers adapted to rest between the Hue sections I and inclosed by the casing, the outer walls the air ',preheating'chambers, having baHied inlet openings communicating with corresponding openings formed within lthe casing, a frusto-conical wall formed by the' lower walls of the air preheating chambers having openings therein, theinner walls of the air preheating chambers forming a smoke passage way of the that of the Hue sections andmeansl whereby the air from the preheating chambers may indirectly 'enter the smoke passage way for v the purpose specified'.

same diameter as In witness whereof, hereunto subscribe my name to this specication 1n the presence of two Witnesses. 4 WILLIAM C. BLASKE. Witnesses:

GUs'rAvUs A. SMITH, WILLLAisI'C. LIN'roN., 

